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sammy [17]
3 years ago
14

13) What are the benefits and detriments of each of the following? Consider both the systems and the programmers’ levels. a. Sym

metric and asymmetric communication b. Automatic and explicit buffering c. Send by copy and send by reference d. Fixed-sized and variable-sized messages
Computers and Technology
1 answer:
dsp733 years ago
5 0

Answer:

Automatic and Explicit Buffering.

In the case of explicit buffering, the length of the queue is provided while in automatic buffering the queue size needs to be indefinite. In automatic buffering there is no need to block the sender while coping the message. While in explicit buffering the sender is blocked for the space in queue.

No memory is being wasted in explicit buffering.

Send by Copy and Send by Reference.

By using the send by copy method, the receiver is not able to change the state of parameter while send by reference allow. The advantage of using the send by reference method is that it allows to change a centralized application to its distributed version.

Fixed-sized and Variable-sized Messages.

In fixed size messaging refers, the buffer size is fixed. This means only a particular number of messages can only be supported by the fixed size buffer. The drawback of the fixed size messages is that they must be a part of fixed size buffer. These are not a part of variable size buffer. The advantage of variable size message is that the length of the message is variable means not fixed. The buffer length is unknown. The shared memory is being used by the variable size messages.

Explanation:

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steposvetlana [31]

The user cannot close all the programs if he closes the open virtual desktop.

<h3>What are virtual desktops?</h3>

A virtual desktop is a computer operating system that does not run directly on the endpoint hardware from which a user accesses it.  The desktop environment is separated from the physical device used to access it.

I call it a false desktop.

It is use to separate your work activities.

Therefore, the user cannot close all the programs if he closes the open virtual desktop.

learn more on virtual desktop here: brainly.com/question/14332029

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To format an individual sparkline, select the sparkline you want to format, and then click the Ungroup button in the Group group
vichka [17]

Answer:

The answer is "Option a"

Explanation:

A Sparkline is a small graph, which is available inside a sheet, that displays information visually. It displays the information is in the form of patterns on several values. It also uses underline to display the low and high value, use with sparklines, and certain alternatives were wrong, which can be defined as follows:

  • In option b, It is used to define the overall view of data, that's why it is wrong.
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3 years ago
Ana is a music lover. She loves to download songs and videos on her computer every time she hears a new song. One day, her compu
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Answer:

Storage outage

As many new songs are released to the Internet every day, Anna might have download thousands of them, which made her computer ran out of storage and RAM(random access memory )

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How do the World Wide Web and the Internet work together?
Firlakuza [10]

Answer:

Explanation:

The relationship between the World Wide Web and the Internet is that the Internet is a collection of connected computers through gateways by which the information that is stored in databases and on servers is transferred from one computer to another and the World Wide Web is the software that is used to retrieve the information requested by the users.  The World Wide Web (which we call the Web because we’re lazy typists) lives “on top of” the Internet. The Internet’s network is at the core of the Web, and the Web is like an attractive parasite that requires the Net for survival (dummies.com, 2010).  The Web page that are accessible on the web usually contain hypertext links and are sometimes called links. These links connect to other pages that are store on the same or even a different server; these servers can be in any location throughout the World.  This system of interlinked documents is known as hypertext (Dummies.com, 2010).

Links can create connections that let you go directly to related information. These invisible connections between pages are like the threads of a spider web — as you click from Web page to Web page, you can envision the Web created by the links. What’s so remarkable about the Web is that it connects pieces of information from all around the planet, on different computers and in different databases (Dummies.com, 2010).  Every Web page has a name attached to it so that browsers, and you, can find it. The name of this naming convention: URL, or Uniform Resource Locator. Every Web page has a URL, a series of characters that begins with http://. (Pronounce each letter, “U-R-L” — no one says “earl.”), (Dummies.com, 2010).  The Internet is a world wide network of computers that are connected (networked) and are using the communication method called TCP/IP. The Internet was named ARPANET in 1969 by the Advanced Research Projects Agency of the U.S. Department of Defence with just four computers connected together (Comentum.com, 2010).  The Internet, sometimes called simply “the Net,” is a worldwide system of computer networks – a network of networks in which users at any one computer can, if they have permission, get information from any other computer (SearchWinDevelopment.com, 2010).  Computers are connected to the Internet via modems and gateways. Some computers are used as servers which are continuously connected to the Internet and used to store web pages; these computers are usually referred to as servers. A house hold computer is primarily used by ordinary people to search for information on the web is usually known as a client. The request for information or search result is passed by the browser on the client to the server that contains the pages which have the relevant information in them via the net. The request passes through the modem then along the net to the correct server, the server then serves up the correct page, which is then sent back to client computer and presented to the user through the browser.

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